EP2848846A1 - Bündiges Differenzdruckventil - Google Patents

Bündiges Differenzdruckventil Download PDF

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Publication number
EP2848846A1
EP2848846A1 EP14182434.2A EP14182434A EP2848846A1 EP 2848846 A1 EP2848846 A1 EP 2848846A1 EP 14182434 A EP14182434 A EP 14182434A EP 2848846 A1 EP2848846 A1 EP 2848846A1
Authority
EP
European Patent Office
Prior art keywords
valve
setting
spindle
cone
housing
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14182434.2A
Other languages
English (en)
French (fr)
Other versions
EP2848846B1 (de
Inventor
Primoz Papez
Matjaz Gustincic
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Danfoss AS
Original Assignee
Danfoss AS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Danfoss AS filed Critical Danfoss AS
Priority to EP18199793.3A priority Critical patent/EP3462067B1/de
Priority to PL18199793T priority patent/PL3462067T3/pl
Priority to PL14182434T priority patent/PL2848846T3/pl
Priority to DK18199793.3T priority patent/DK3462067T3/da
Priority to SI201431045T priority patent/SI2848846T1/sl
Publication of EP2848846A1 publication Critical patent/EP2848846A1/de
Application granted granted Critical
Publication of EP2848846B1 publication Critical patent/EP2848846B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
    • F16K31/14—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves
    • F16K31/145—Actuating devices; Operating means; Releasing devices actuated by fluid for mounting on, or in combination with, hand-actuated valves the fluid acting on a diaphragm
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
    • G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
    • G05D16/0644—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator
    • G05D16/0655—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator using one spring-loaded membrane
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • F24D19/1006—Arrangement or mounting of control or safety devices for water heating systems
    • F24D19/1009—Arrangement or mounting of control or safety devices for water heating systems for central heating
    • F24D19/1015—Arrangement or mounting of control or safety devices for water heating systems for central heating using a valve or valves
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/028—Controlling a pressure difference
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/10—Arrangement or mounting of control or safety devices
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D16/00—Control of fluid pressure
    • G05D16/04—Control of fluid pressure without auxiliary power
    • G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule

Definitions

  • the present invention relates to a valve comprising a valve part comprising;
  • a typical pressure balancing valve comprises a membrane deflecting according to a pressure difference over it and by this deflection regulates the orifice through a valve seat by changing the position of a valve cone relative to a valve seat.
  • the object of the present invention is to introduce a pressure balancing valve as they are well known, but where it further introduces a shut off function and a flushing function that can be needed for example during assembly of the system, or at least of the valve into the flow system.
  • the object of the present invention is further to introduce a balancing valve as they are well known, but where a part of the valve may be made of cheaper materials that may not be sustainable to the fluids in the system.
  • a first aspect of the present invention thus introduces a valve comprising a valve part comprising;
  • a second aspect of the present invention introduces a similar pressure balancing valve, but where a part of the valve is sealed from the fluids thus making it possible to form this part of cheaper materials that may not be sustainable to the fluids in the system.
  • the present invention further introduces a valve where the pressure setting may be changed, thus changing the pressure of the fluid flowing from its inlet to the outlet that valve maintains at a constant level, where this is done by translocate the spindle within the valve cone.
  • this is done by the valve cone comprising an internal winded bore matching windings at the end of the spindle such that a rotation of the spindle changes its position within the valve cone, this changing the tension of the biasing member.
  • the regulation part comprises a setting partly positioned within setting housing and where the setting housing and setting are interconnected thus that the setting may be translocated within the setting housing thus translocating the spindle within the valve cone.
  • Both setting housing and setting are hollow bodies such as cylinder shaped. To facilitate the translocation of setting relative to setting housing they in a preferred embodiment are interconnected by windings.
  • a blocking mechanism is positioned to prevent rotation of the setting relative to setting housing when in a locking position and enabling rotation when in an unlocking position, where the shift from a locking position to a unlocking position, and vice versa, may be a rotation of the blocking mechanism by some degrees of angle around the setting housing and / or setting, where the locking may be in any manner as will be easily performed by the person skilled in the art.
  • a spring guide is connected to the setting and defines the uppermost position of the biasing member in the same manner as it has a bottom position defining its lowermost position, the distance between these thus defining the tension of the biasing member and thus giving to the membrane where the spring guide is connected to a setting snap in a manner where they are inhibited from relative rotation and where the spring guide is prevented from rotation within the setting and where the spindle is prevented from rotation relative to the spring guide.
  • the setting is done by rotating a knob connected to the spring guide and / or setting in a manner where a rotation of the knob induces a rotation of setting and spring guide and thus the spindle being fixed to the spring guide and thus induces a translocation of the spindle within valve cone.
  • the valve further comprises a shut off function where the valve cone is maintained in contact with the valve sea to shut off any fluid communication from the inlet to the outlet. Again but maintaining the spindle, or locking the spindle, at this shutting off position the valve cone will be unaffected by changing pressure differences over the membrane, this thus being prevented from deflection.
  • shut off function knob is equipped with internal windings adapted to match external windings at the setting where the windings for shut off function is connected by pushing down knob where at least one limiter bump is be formed at the setting and/or knob (2) such that a certain force is needed to push the knob over the limiter bump(s) to the shut off mode.
  • the limiter bump(s) the knob only get in contact with the windings for flushing function when pushed down, and may similar be disconnected from the windings by being dragged back over the bump(s) again.
  • the flushing function of the present valve is operated by translocating the spindle to an upper position without changing its position within the valve cone, where in one embodiment of the present invention to facilitate the flushing function a flushing accessory is attached to the valve for the flushing function, said flushing accessory comprising an inner part adapted to fit within the outer part and the two parts being interconnected by windings, where the inner part further comprises means to connect to a section of the spring guide in a manner where the two in inhibited in relative rotation to each other such as by their shape, such as the section having two flat opposing sides and the inner part having an centre opening matching this shape if the section, such that when the inner parts is translocated upwards it drags the setting snap and thus the spindle upwards too, thus removing the valve cone from valve seat forming free access through the valve from inlet to outlet.
  • Fig. 1 shows a schematic cross section illustration of an embodiment of the valve of the present invention.
  • the valve comprises a valve housing (1) forming a flow passage between an inlet and outlet. Within the flow passage is positioned a valve seat (2) cooperating with a valve cone (3) in a manner where the flow passage through the flow passage may be fully or partly blocked.
  • the valve cone (3) interacts with a membrane (4) such that a differential pressure across the membrane will deflect it.
  • the valve cone (3) is attached to spindle (5) being biased by spring (6) positioned within setting housing (7) and setting (8).
  • the valve cone (3) comprises an internal winded bore matching windings at the end of the spindle (5) such that a rotation of the spindle (5) changes its position within the valve cone (3).
  • Setting (8) is partly positioned within setting housing (7) and the two parts are interconnected by windings thus that the setting (8) by screwing may be positioned a selectable depths within the setting housing (7).
  • a blocking mechanism (9) is positioned to prevent rotation of the setting (8) relative to setting housing (7) in a locking position and enabling it in an unlocking position.
  • a locking mechanism may be introduced preventing movement of the blocking mechanism (9) in changing from locking position to unlocking position.
  • a spring guide (10) is connected to the setting (8) and defines the uppermost position of the spring (6) in the same manner as it has a bottom position (13) in the illustrated embodiment also being the bottom part of the setting housing (7) defining its lowermost position, the distance between these thus defining the tension of the spring and thus giving its biasing to spindle (5) translating the biasing to the membrane (4) through the valve cone (3).
  • the spring guide (10) is connected to the setting snap (11) in a manner where they are inhibited from relative rotation such as by shape, e.g. a section of the spindle (5) is hexagonally shaped and fits within an equally formed opening of the setting snap (11).
  • the spring guide (10) is prevented from rotation within the setting (8) and the spindle is prevented from rotation relative to the spring guide (10) and thus the setting (8) too.
  • a knob (12) is attached to the setting (8) and its functions will be described in detail later.
  • the valve according to the present invention comprises a scale setting markers at the setting (8) (not illustrated at the figure) visualizing the actual setting of the system, being the tension of the spring (6) that again is directly linked with the pressure setting, where the visualization may be related to how deep the setting (8) is positioned within the setting housing (7) and which markers thereby is hidden by the setting housing (7).
  • the setting is done by removing the knob (12) and turning it around.
  • the knob (12) is equipped with a deepening shaped to match the end of the setting snap spring guide (10) in a manner that when connected they are prevented from relative rotation to each other by shape, again e.g. by hexagonal shapes.
  • valve cone (3) and spindle (5) are interconnected by windings and the valve cone (3) is prevented from rotation within the valve housing (2), the rotation of the spindle (5) leads to a change of its position within the valve cone (3) thereby changing the height from the end of the valve cone (14) to the spring guide (10), the end of the valve cone (14) usually being the part of it adapted to contact the valve seat (2) when the valve are shut off, see also below.
  • the knob (12) then may be turned again and positioned as in Fig. 1 .
  • the knob (12) is equipped with internal windings (15) adapted to match external windings (16) at the setting (8), but where these windings during operational mode of the valve are not connected.
  • the knob (12) is pushed down to mate them where one or more limiter bumps may be formed at the setting (8) and/or knob (2) such that a certain force is needed to push the knob (12) over the limiter bump(s) to the shut off mode.
  • the valve according to the present invention further includes a flushing function as illustrated in one embodiment in Figs. 4A and 4B where the valve is forced in the open position. This is especially relevant during filling or flushing of the system where to the valve is attached, such as pipes, radiators etc.
  • a flushing accessory (50) is needed being attached to the valve after the knob (12) has been removed. It comprises an inner part (51) adapted to fit within the outer part (52) and the two parts being interconnected by windings.
  • the inner part (51) further comprises means to connect to a section (53) of the spring guide (10) in a manner where the two in inhibited in relative rotation to each other such as by their shape, such as the section (53) having two flat opposing sides and the inner part (51) having an centre opening matching this shape if the section (53).
  • This centre opening may in one non-limiting embodiment be part of a keyhole shaped opening asymmetrically positioned at the inner part (51) thus that an larger opening part is positioned off-centre for positioning the top section (54) through it during of assembly of the accessory (50) on the valve, and then when the section (53) is shifted into the centre opening of the keyhole shaped opening the top section (54) being larger than this centre opening rests on the top surface of the inner part (51).
  • the inner parts (51) when the inner parts (51) is translocated upwards it drags the spring guide (10) and thus the spindle (5) upwards too, thus removing the valve cone (3) from valve seat (2) forming free access through the valve from inlet to outlet.
  • Fig. 4A shows the knob (12) is being removed thus freeing the end part of the spring guide (10), and subsequently the flushing accessory (50) is positioned such that the inner part (51) connects to the end part of the spring guide (10). Since the spindle (5) and spring guide (10) is prevented from rotation so is the inner part (51) and by rotation of the outer part (52) the spindle (5) and the inner part (51) will be moved axially, and the spindle (5) therefor is force d in the upper and open position as seen in Fig. 4B . Due to the windings all restoring forces will have no effect and the spindle (5) and thereby valve cone (3) will remain in this open position until once again set free for normal operation.
  • the present invention however is not limited to the above described embodiment to change the setting.
  • the setting is done without removing the knob (12) but where the knob (12) in its standard position as illustrated in Fig. 1 is rotated.
  • valve knob (12) are not removed and turned around as seen in fig. 2 , but may be turned directly.
  • the knob (12) and setting (8) are blocked from relative rotation e.g. by a forming a bump at the one of the knob (12) or setting (8) fitting into a recess, or deepening, of the other.
  • the bump is positioned within the recess any relative rotation is prevented, and when rotating the knob (12) the setting (8) are rotated too thus changing the setting in the same manner as described at the previous embodiment above, just as unlocking, unblocking and subsequently blocking and locking.
  • shut-off function and flushing function both is related to the shut-off function as described above where the valve is shut-off by rotation of the knob (12) relative to the setting (8) until it guided by windings has moved to a lower position where the valve cone (3) fully mates with the valve seat (2) to shut off for all flows.
  • flushing function would simply be by rotation of the knob (12) to an upper position.
  • the valve is seen to comprising a valve part (60) formed within the valve housing (1), and a regulation part (61) formed of e.g. the setting housing (7), setting (8) and knob (12) excluding the spindle (5).
  • the valve part (60) comprise parts getting in contact with the media of the system such as the fluid flowing from the inlet to the outlet, this being in contact to one side of the membrane (4) through an first pressure opening (62), and the media relevant for the pressure equalization being in contact to the second side of the membrane (4) through an second pressure opening (63).
  • the valve part (60) thus needs to be formed of materials sustainable to the conditions of the fluids and the pressures, and is therefore typically formed of metal.
  • the regulation part (61) is attached to the valve part (60) thus as to a tap extension (64) to the valve housing (1), but its internal is sealed from it, such as by an O-ring (65) formed within the tap extension (64).
  • O-ring (65) formed within the tap extension (64).
  • the spindle (5) is positioned such that it has a part positioned within the setting housing (7) and setting (8) of the regulation part (61), and a part positioned within valve housing (1) of the valve part (60) where it is connected to the valve cone (3) as also described above, and thus preferably is made of a material sustainable to the fluids too.
  • Figs. 5A and 5B illustrates an alternative use of removing the knob (12) and turning it around where it is used for the flushing function rather than setting as in Fig. 2 , but otherwise it operates in the same manner and in the same manner as the flushing described previously. Setting then will be done by rotating the knob (12) in its standard position as seen in Fig. 1 .

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Fluid Mechanics (AREA)
  • Lift Valve (AREA)
  • Preventing Unauthorised Actuation Of Valves (AREA)
  • Nozzles (AREA)
EP14182434.2A 2013-09-11 2014-08-27 Bündiges Differenzdruckventil Active EP2848846B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP18199793.3A EP3462067B1 (de) 2013-09-11 2014-08-27 Differenzdruckventil
PL18199793T PL3462067T3 (pl) 2013-09-11 2014-08-27 Różnicowy zawór ciśnieniowy
PL14182434T PL2848846T3 (pl) 2013-09-11 2014-08-27 Zawór ciśnienia różnicowego z płukaniem
DK18199793.3T DK3462067T3 (da) 2013-09-11 2014-08-27 Differenstrykventil
SI201431045T SI2848846T1 (sl) 2013-09-11 2014-08-27 Diferencialni istonivojski tlačni ventil z izplakovanjem

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DKPA201300517 2013-09-11

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP18199793.3A Division EP3462067B1 (de) 2013-09-11 2014-08-27 Differenzdruckventil
EP18199793.3A Division-Into EP3462067B1 (de) 2013-09-11 2014-08-27 Differenzdruckventil

Publications (2)

Publication Number Publication Date
EP2848846A1 true EP2848846A1 (de) 2015-03-18
EP2848846B1 EP2848846B1 (de) 2018-12-12

Family

ID=51398563

Family Applications (2)

Application Number Title Priority Date Filing Date
EP14182434.2A Active EP2848846B1 (de) 2013-09-11 2014-08-27 Bündiges Differenzdruckventil
EP18199793.3A Active EP3462067B1 (de) 2013-09-11 2014-08-27 Differenzdruckventil

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP18199793.3A Active EP3462067B1 (de) 2013-09-11 2014-08-27 Differenzdruckventil

Country Status (8)

Country Link
EP (2) EP2848846B1 (de)
CN (1) CN104421488B (de)
DK (2) DK2848846T3 (de)
ES (1) ES2854098T3 (de)
PL (2) PL3462067T3 (de)
RU (2) RU2670003C1 (de)
SI (2) SI2848846T1 (de)
TR (1) TR201903319T4 (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105114675A (zh) * 2015-08-23 2015-12-02 李志刚 一种可调式恒定压差阀
DK201500681A1 (en) * 2015-11-05 2017-04-10 Danfoss As Valve with detachable regulation unit
EP3165987A1 (de) * 2015-11-05 2017-05-10 Danfoss A/S Spülungseinrichtung für ventil
WO2018130709A1 (de) * 2017-01-16 2018-07-19 Grohe Ag Ventil für einen unterputzeinbaukörper einer sanitärarmatur mit einem drehbar an einem ventilknopf befestigten betätigungsknopf
IT201700099507A1 (it) * 2017-09-05 2019-03-05 Fimcim Spa Valvola di controllo di pressione differenziale
CN110507875A (zh) * 2018-05-21 2019-11-29 北京科联升华医疗科技有限公司 一种具有流量锁定机构的流速控制器
EP3677981B1 (de) * 2019-01-07 2023-08-23 Danfoss A/S Differenzdruckventilanordnung

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WO2024052539A1 (en) * 2022-09-08 2024-03-14 Belimo Holding Ag Short-stroke adapter

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US20120018658A1 (en) * 2010-07-21 2012-01-26 Taprite-Fassco Manufacturing, Inc. D/B/A Taprite Pressure reducing valve
WO2012100777A1 (en) * 2011-01-27 2012-08-02 Danfoss A/S Valve arrangement for controlling a heating or cooling fluid and tool arrangement for replacing at least a part of such a valve arrangement

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US2230718A (en) * 1938-08-15 1941-02-04 Gannestad Thor Valve
US3692047A (en) * 1970-07-20 1972-09-19 Wilkins Regulators Co Automatically regulated fire valve
US3757719A (en) * 1972-05-26 1973-09-11 Us Navy Depth compensator valve
US3946756A (en) * 1974-05-30 1976-03-30 A-T-O Inc. Pressure control valve
WO1994021949A1 (en) * 1993-03-19 1994-09-29 Tour & Andersson Ab Self-actuating control valve
WO2001094818A1 (en) * 2000-06-05 2001-12-13 Tour & Andersson Hydronics Ab Differential pressure regulator
US20120018658A1 (en) * 2010-07-21 2012-01-26 Taprite-Fassco Manufacturing, Inc. D/B/A Taprite Pressure reducing valve
WO2012100777A1 (en) * 2011-01-27 2012-08-02 Danfoss A/S Valve arrangement for controlling a heating or cooling fluid and tool arrangement for replacing at least a part of such a valve arrangement

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105114675A (zh) * 2015-08-23 2015-12-02 李志刚 一种可调式恒定压差阀
CN106870804B (zh) * 2015-11-05 2019-09-10 丹佛斯有限公司 具有可拆卸调节部件的阀
DK201500681A1 (en) * 2015-11-05 2017-04-10 Danfoss As Valve with detachable regulation unit
DK178871B1 (en) * 2015-11-05 2017-04-10 Danfoss As Valve with detachable regulation unit
EP3165986A1 (de) * 2015-11-05 2017-05-10 Danfoss A/S Ventil mit abnehmbarer regeleinheit
EP3165987A1 (de) * 2015-11-05 2017-05-10 Danfoss A/S Spülungseinrichtung für ventil
CN106870804A (zh) * 2015-11-05 2017-06-20 丹佛斯有限公司 具有可拆卸调节部件的阀
RU2647008C1 (ru) * 2015-11-05 2018-03-13 Данфосс А/С Средство для промывания клапана
RU2659601C2 (ru) * 2015-11-05 2018-07-03 Данфосс А/С Клапан со съемным регулирующим узлом
WO2018130709A1 (de) * 2017-01-16 2018-07-19 Grohe Ag Ventil für einen unterputzeinbaukörper einer sanitärarmatur mit einem drehbar an einem ventilknopf befestigten betätigungsknopf
CN110573778A (zh) * 2017-01-16 2019-12-13 高仪股份公司 用于洁具配件的暗线安装体的、具有可旋转地固定至阀旋钮按的控制旋钮的阀
CN110573778B (zh) * 2017-01-16 2021-05-04 高仪股份公司 用于洁具配件的暗线安装体的、具有可旋转地固定至阀旋钮按的控制旋钮的阀
US11105438B2 (en) 2017-01-16 2021-08-31 Grohe Ag Valve for a flush-mounted body of a sanitary fitting, having a control knob rotatably fastened to a valve knob
EP3454160A1 (de) * 2017-09-05 2019-03-13 Fimcim S.P.A. Differenzdruckregelventil
IT201700099507A1 (it) * 2017-09-05 2019-03-05 Fimcim Spa Valvola di controllo di pressione differenziale
CN110507875A (zh) * 2018-05-21 2019-11-29 北京科联升华医疗科技有限公司 一种具有流量锁定机构的流速控制器
EP3677981B1 (de) * 2019-01-07 2023-08-23 Danfoss A/S Differenzdruckventilanordnung

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PL2848846T3 (pl) 2019-05-31
DK2848846T3 (en) 2019-03-25
TR201903319T4 (tr) 2019-04-22
RU2634340C2 (ru) 2017-10-25
SI2848846T1 (sl) 2019-02-28
ES2854098T3 (es) 2021-09-20
PL3462067T3 (pl) 2021-06-14
SI3462067T1 (sl) 2021-02-26
CN104421488B (zh) 2017-09-22
RU2014136108A (ru) 2016-03-27
EP3462067A1 (de) 2019-04-03
DK3462067T3 (da) 2021-03-08
EP3462067B1 (de) 2020-12-02
CN104421488A (zh) 2015-03-18
EP2848846B1 (de) 2018-12-12
RU2670003C1 (ru) 2018-10-17

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